Pump



Patented Aug. 8, 1950 IWUNITED STATES P TENT OFFICE by mesne assignments, to, F. L. Jacobs 00., Detroit, Mich., a corporation of Michigan Original application November-24, 1944, Serial No. 564,961. Divided and this application Jannary 28,1946; Serial No. 643,853'

This invention relates to a pump and to means for providing a sturdy, compact pump construction. It has for one object to provide suitable means for joining the parts of a pumphouse ing.

It has for another object to provide means for joining them yieldingly together.

Another object is toiprovide, in connection with a pump housing, joining means including yielding members in the attaching mechanism.

Other objects will appear from time to time in the course of the specification and claims.

The invention is illustrated more or less diagrammatically in the accompanying drawings,

wherein: v Figure 1 is an elevation of one form of the pump, with parts in section and parts broken aw y;.

Figure- 2 is a 2-'-2of Figure 1;

Figure 3 is a fragmentary section illustrating a modified form of bail construction; and

Figure 4 is a fragmentary section of the device of Figure 2, showing a modified form of diaphragm moving mechanism.

Like parts are indicated by like characters throughout the specification and the drawings.

In the construction shown,=a pump isformed generally of two housing members. .Means are provided for joining them removably together and a diaphragm is gripped between the two members. The operating mechanism is in the main positioned within one housing member, and the pump inlet and outlet connections and inlet and outlet valves are positioned in another housing member. The construction thus forms in effect two separable units. The diaphragm and diaphragm operating means are positioned mainly in one housing member, and the diaphragm is gripped between the two. .As shown, I is a lower housing member.v It is provided with two perforated and threaded ears 2; 'It is shaped to provide a trough-like section 3 and an opening or perforation 4. A preferably integral extension 5 terminates in a flange 6 which'is perforated, as at I, to receive screws or other attaching'means by which the pump is mounted on a base which will usually be a convenient portion of an engine with which the pump is to be used. The section I. is also provided with an upstanding fiange 8 which is positioned about a shoulder 9 against which a packing It! may be positioned. The shoulder may be flat or may be slightly inclined, if desired, depending upon 'the transverse section taken at line "8 Claims. (o1. ins-150) shape or type of packing or gasket In which is to be used.

A pin or shaft l l is positioned in two spring members l2 which are themselves attached to or formed as a part of a support I3. The member I3 is held in place by a bolt M, or otherwise.

A diaphragm operating lever I5 is sup-ported by the shaft H and may be integral with it or may be mounted to rotate about it. Atone end the lever I5 is provided with a socket I6 which may have a cushioning and sound deadening member I! fixed in it. A push rod I 8 may be reciprocated to move the lever I5 up and down. The lever 15 is provided at its opposite end with a rounded portion IQ about which a cushioning sleeve 26' of rubber or comparable material may be positioned.

When the parts are assembled, the member 20 is received in a stirrup-like member 2| which is fastened to the diaphragm.

22 is a diaphragm positioned against the packing or gasket I0. It may be provided on its upper surface with a rigid stiffening membe 23 and on its lower surface with a similar mem-; ber 24 which may, if desired, be wider than the member 23. A cup-like member 25 may also be positioned on'the lower side of the diaphragm. A bolt 26 passes through the diaphragm, through the members 23, 24 and 25 and through the stirrup 2|. If desired, a washer or laterally pro jecting member 21 may be positioned within the stirrup and under one end'of the rivet 26. A spring or springs 28 are positioned in the member 3 beneath the diaphragm and they bear at one end'against the member 3 and at the opposite end against the member 24. The springs arebiased to raise the diaphragm when free to do so. a l

An upperhousing member is indicated gen-i erally'by the member 29. Beneath its lower edge 30 is positioned a gasket or packing 3! which is in contact with theupper edge of the diaphragm 22. .The edge 30 may fit within the upstanding flange8 of the lower housing section, as shown particularly in Figure 2, or it may not, as shown in Figure 1.

The housing member 29 is provided with an internal preferably integral member 32. The members 29 and 32 thus define between them-' selves an-annular pressure dome 33. The member 32 is open at its upper end to receive an-inlet connection .34. It has a tapped opening 35 for connection to a fluid supply. The member 34 may be provided 'witha depression 36, to enegage a bail or other attaching means The member 32 is also preferably provided with a shoulder 31, within which the upper edge of a strainer 38 is seated, the strainer lying generally Within the cavity defined by the member 32. A packing or gasket 39 is positioned on the edge 3'! and within the fitting 34. The member 34 is preferably provided with a downwardly depending flange 40 which overhangs and fits about the upper end of the upper housing section 29.

A tapped outlet opening or connection 4| is provided in communication with the space 33 and may receive an outlet pipe, or conduit.

Within the upper housing 29 are positioned inlet and outlet valves. Thus the disc valve 42' is positioned against the plug 43, and is held yieldingly seated by a spring M. The spring is positioned about an upstanding member 45 which is preferably integral with the member 32 although it might be attached to it. One or more slots 46 are cut or formed in the member 45. The member- 29 is provided with an. inlet passage 51 through which fluid flows after it has passed throughthe screen or strainer 38 and has passed inwardly beyond'the inlet valve 42. An outlet valve 48 is positioned. to control the outlet of fluid. It is preferably in the shape of a flat annulus and may be positioned about the member 32. A spring 49 is biased to press the outlet valve 48 against an annular valve seat 53) which is positioned as shown across the gap between the members 29 and 32. It is provided with a plurality of openings 5| and may be held in place by screws 52-, or otherwise.

The two housing sections 1 and 29 are held yieldingly together by a ball 53 which is pro.-

videdwith a depression 54 to fit into the depression 38 of the member 34. At each endthe bail is provided with perforated ears 55. Bolts or screws 56' are seated in the ears 2 of. housing section I and may be adjusted in these members. Springs 51 are positioned one beneath the head of each of the screws-5B. The springs thus bear against the screws and the ears 55 of the ball 53. The compressiveeifect upon the spring may be adjusted by the degree to whichv the screws 56 are screwed into position.

In the modified form of Figure 3 the pump construction is the same as shown and the bail; is the same as shown. The attaching means for the bail, however, are different. Instead of the threaded ears 2, the lower pump. section I is provided with perforated ears 58. and the upper section 29 is provided with corresponding perforated cars 59. Within the ears 5.9. may be formed cavities 60 at the bottom of eachof which is provided a shoulder 61. A screw or bolt. .62 is positioned through each pair of ears and. at its lower end has mounted upon it a nut 63; At its upper end a nut fiilismounted .oneach screw andbears against the car 55 of the bail 53.. An intermediate. nut 65 is positioned oneach screw and serves adjustably to: compress a spring 6:6;

Irrthe modified form of Figure 4 the construction of thediaphragm operating means appears. As there shown, instead of. the lever i 5, a lever 61 is provided. This lever is formed. with a depression 68 in which a raised portionfifl is positioned. .A spring 10 is seated over or about the raised portion 69 within the depression 58 and bears at its opposite end upon the floor of the section 5 of the member I. The spring 10 is biased to force the right end of the lever 61 upwardly.

Thi application is a division of mycopending application, Serial No. 564,961, filed November 24,

4 1944, now United States Letters Patent No. 2,485,439, issued October 18, 1949.

The use and operation of this invention are as follows:

The device is shown as assembled and is positioned in a liquid line so that liquid. may enter through the connection 35 and be discharged through the connection 4 I When the diaphragm is raised and lowered, alternate compression and suction strokes are accomplished. The entering liquid passes through the filter 38 and on a suctionstroke the inlet valve 42 is depressed from theseat 43 against the resistance of the spring 44 and liquid passes through the openings 46 into the. chamber bounded by the diaphragm. On the following compression stroke, when the diaphragm is raised by the springs 28, compression seats the valve 42 and unseats the valve 48 and liquid passes through the outlet openings 5| and the discharge passage 41. The annular space 33 acts as a pressure dome to. equalize the flow of liquidthrough the pump,

The movements of the diaphragm are controlled by the movement of the. levers i5 and 6.1.

In the modified form of Figure 4, the spring 1i). assists the movement of the lever 61 in the compression direction.

The bail constructions of Figures 1 and 3 permit the joining of the housing sections under yieldable conditions .so that should excessive pressure develop within the, pump, the housing sections mayyield'to avoid breakage, Also, the presence of the springs in the attaching means insures a "live compressive: effect in holding the two housing sections together.

I claim;

1. In combination. inapumpassembly, a pair of housing members, a diaphragm seat formed. on each of said members, a diaphragm positioned between said members and said seats, and a bail positioned. upon one of said housing members, and means for securing the bail to the other of said housing members, said means. including screws engaging the other of saidihousing members and engaging said bail, and springs positioned between said screws andusaidbaii.

2. In combination in a pump assembly. a pair of housing members, .a diaphragm seat formed on each .of'said members, a diaphragm positioned between saidmembers and said seats; and a bail positioned upon one of: said housing members, and means forsecuring the bailv to the. other'ofgsaid housing members, said means including screws engaging the .otherof said housing members and engaging said bail,. and springs positioned be,- tween said screws and said, bail, said. screws being adjustably engaged in said other-of said. housin members whereby-the compression .ofsaid'springs may be varied.

3. In combination 1111a pinnp assembly, a pair of housingmembers; a: diaphragm seat formedon each ofv said; members, a. diaphragm positioned between said membersand said seats, a pair of packing'members positioned oneon each side; of the periphery of said diaphragm andin contact with the adjacent of said housing members, a hail positioned upon one ofsaid housing members, and means for. securing thebailto the other of. said .housing members; said means including screws engaging said other of said housing members and engaging said baih and springs positioned between said screws and said bail.

4. Inv combination in a. pump assembly, a pair of housing members; a. diaphragm. seat formed oneach of saidmembera.adiaphragm positioned between said members and said seats, and a bail positioned intermediate its ends upon one of said housing members, and means for securing the bail to the other of said housing members, said means including screws engaging the other of said housing members and engaging the ends of said bail, and springs positioned between said screws and said bail.

5. In combination in a pump assembly, a pair of housing members, a diaphragm seat formed on each of said members, a diaphragm positioned between said members and said seats, and a bail positioned intermediate its ends upon one of said housing members, and means for securing the bail to the other of said housing members, said means including screws engaging the other of said housing members and engaging the ends of said bail, and springs positioned between said screws and said bail, said screws being adjustably engaged in said other of said housing members, whereby the compression of said springs may be varied.

6. In combination in a pump assembly, a pair of members defining a pump housing, a diaphragm positioned between said members, andmeans for holding the members together to grip the periphery of said diaphragm, said means including perforated projections formed on each housing member, and bolts passing through said projections, nuts on each of said bolts, a spring engaged by one of said nuts and bearing upon one of said housing members, whereby the housing members are held together under compression, and a bail bearing upon one of said housing members and engaged upon said bolts and nuts for holding said bail in adjustable engage ment with said bolts.

the periphery of said diaphragm, said means including perforated projections formed on each housing member, and bolts passing through said projections, nuts on each of said bolts, a spring engaged by one of said nuts and bearing upon one of said housing members, whereby the housing members are held together under compression, the nut in engagement with said spring being adjustable upon the bolt to vary the degree of compression, and a bail bearing upon one of said housing members and engaged upon said bolts and nuts for holding said bail in adjustable engagement with said bolts.

8. In combination in a fuel pump assembly, a pair of members defining a pump housing, a diaphragm positioned between said members, and means for holding the members together to grip the periphery of said diaphragm, said means including a pair of perforated projections formed on one of said members at opposite sides thereof, a bolt mounted in each of said perforations, a bail bearing upon the other of said housing members and having its ends engaged upon said bolts for holding said ends in adjustable relation to said one of said housing members, and springs encircling said bolts and acting to hold said housing members together under compression.

CHARLES A. ERICKSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,711,803 Munday' May 7, 1929 1,985,282 Carter Dec. 25, 1934 2,222,869 Jencick Nov. 26, 1940 2,356,738 Brugger Aug. 29, 1944 2,435,439 Erickson Oct. 18, 1949 

